    New chain ID            Original chain ID

9i1w-pdb-bundle1.pdb:
           A                         1
           B                         3
           C                         4
           D                         9
           E                        LA
           F                        LB
           G                        LC
           H                        LD
           I                        LE
           J                        LF
           K                        LG
           L                        LH
           M                        LI
           N                        LJ
           O                        LK
           P                        LL

9i1w-pdb-bundle2.pdb:
           A                        LM
           B                        LN
           C                        LO
           D                        LP
           E                        LQ
           F                        LR
           G                        LS
           H                        LT
           I                        LU
           J                        LV
           K                        LW
           L                        LX
           M                        LY
           N                        LZ
           O                        La
           P                        Lb
           Q                        Lc
           R                        Ld
           S                        Le
           T                        Lf
           U                        Lg
           V                        Lh
           W                        Li
           X                        Lj
           Y                        Lk
           Z                        Ll
           a                        Lm
           b                        Ln
           c                        Lo
           d                        Lp
           e                        Lq
           f                        Lr
           g                        Ls
           h                        PC
           i                        PN
